降雨和前期含水量对大别山区不同作物坡面产流产沙的影响

洪雨馨; 姚蕊; 孙鹏; 汪军红; 汪文; 胡磊; 凌佳妍

doi:10.13870/j.cnki.stbcxb.2020.06.008

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降雨和前期含水量对大别山区不同作物坡面产流产沙的影响

更新时间：2025-03-12

- 降雨和前期含水量对大别山区不同作物坡面产流产沙的影响
- Effects of Rainfall and Soil Water Content on Runoff and Sediment Yield on Different Crop Slopes in Dabie Mountain Area
- 水土保持学报 2020年34卷第6期页码：53-59
- 作者机构：
  
  1. 安徽师范大学地理与旅游学院,安徽,芜湖,241002
  2. 南京师范大学虚拟地理环境教育部重点实验室,南京,210023
  3. 北京师范大学环境演变与自然灾害教育部重点实验室,北京,100875
  4. 霍山县水土保持试验站, 安徽霍山,237200
- 作者简介：
  
  [ "洪雨馨(1998-),女,硕士研究生,主要从事水土保持工程研究。E-mail:wenhui177@126.com" ]
- 基金信息：
  
  安徽高校协同创新项目（GXXT2019047）国家重点研发计划项目"不同温升情景下区域气象灾害风险评估"（2019YFA0606900）国家自然科学基金项目（41601023，41771536）安徽省自然科学基金项目（1808085QD117）
- DOI：10.13870/j.cnki.stbcxb.2020.06.008
  中图分类号： S157.1
- 纸质出版：2020
- 稿件说明：
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洪雨馨, 姚蕊, 孙鹏, 等. 降雨和前期含水量对大别山区不同作物坡面产流产沙的影响[J]. 水土保持学报, 2020,34(6):53-59.

HONG Yuxin, YAO Rui, SUN Peng, et al. Effects of Rainfall and Soil Water Content on Runoff and Sediment Yield on Different Crop Slopes in Dabie Mountain Area[J]. 2020, 34(6): 53-59.
洪雨馨, 姚蕊, 孙鹏, 等. 降雨和前期含水量对大别山区不同作物坡面产流产沙的影响[J]. 水土保持学报, 2020,34(6):53-59. DOI： 10.13870/j.cnki.stbcxb.2020.06.008.

HONG Yuxin, YAO Rui, SUN Peng, et al. Effects of Rainfall and Soil Water Content on Runoff and Sediment Yield on Different Crop Slopes in Dabie Mountain Area[J]. 2020, 34(6): 53-59. DOI： 10.13870/j.cnki.stbcxb.2020.06.008.

摘要

基于霍山县水土保持试验站3个径流小区（茶叶、桑树、红芋）2016—2017年逐日连续观测数据，定量研究土壤含水量与天然降雨条件下产流产沙规律与动态变化特征。结果表明：（1）4—7月为产流高峰期，该时期各小区产流量占年产流量的76%（桑树），57%（茶叶），70%（红芋）。3种作物对产流产沙的抑制效果为茶树地 > 桑树地 > 红芋地。（2）各作物年内土壤含水量变化趋势相似，全年变化呈"W"形。其中表层土壤平均含水量排序为茶树地 > 桑树地 > 红芋地，与作物抑制产流产沙效果排序一致。秋季土壤水分稳定性最强，夏季最弱。全年以桑树为例的乔木对土壤水分稳定效果最好。（3）降雨参数与土壤含水量之间灰色关联度大小为历时 > 平均雨强 > I30 > I60 > 雨量。作物小区内产流量贡献度最大变量为降雨侵蚀力，而就产沙量而言，茶叶地与红芋地的产沙量贡献度最大变量为I30，对桑树地产沙贡献度最大变量为降雨量。

Abstract

Based on the daily observation data of three runoff communities (tea

mulberry and red taro) in soil and water conservation test station of Huoshan county from 2016 to 2017

this study quantitatively analyzed the law and dynamic changing characteristics of runoff and sediment yield under the conditions of soil moisture content and natural rainfall. The results showed that: (1) April to July was the peak period of runoff

during which the yield of each community accounted for 76% (mulberry)

57% (tea) and 70% (red taro) of the annual yield. The inhibition effect of three crops on the runoff and sediment yield was ranked as tea > mulberry > red taro.(2) The changes of the soil moisture content under different crops were similar

showing a "W" type for the annual change. The average water contents of the surface soil were ranked as tea > mulberry > red taro

which was consistent with the effect of crop inhibition on runoff and sediment yield. The stability of soil moisture was the strongest in autumn and the weakest in summer. Mulberry trees stabilized soil moisture best throughout the year. (3) The grey correlation degrees between rainfall parameters and soil water content were as follows duration > mean rainfall intensity > I30 > I60 > rainfall. Rainfall erosivity had the greatest influence on runoff in crop plots. In terms of sediment yield

the maximum contribution variable of sediment yield in tea land and red taro land was I30

and the maximum contribution variable of sediment yield in mulberry land was rainfall.

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